Vulnerability · Published Jul 14, 2026 · Assigned by GitHub_M
CVE-2026-53633Vitest: Exposed Browser Mode API Can Proxy CDP and Overwrite Config Files, Leading to RCE
Critical 9.8
In plain English
A critical-severity missing authorization in vitest from vitest-dev. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Vitest is a testing framework powered by Vite. From 3.0.0 until 3.2.5, 4.1.8, and 5.0.0-beta.4, Vitest Browser Mode exposed a cdp() API that forwarded raw Chrome DevTools Protocol methods without being gated by allowWrite or allowExec, allowing a remote client with exposed browser API metadata to use CDP Page.setDownloadBehavior and Runtime.evaluate to overwrite vite.config.ts and execute attacker-controlled Node.js code. This issue is fixed in versions 3.2.5, 4.1.8, and 5.0.0-beta.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @vitest/browser | 5.0.0-beta.4 | GHSA-g8mr-85jm-7xhm |
| npm | @vitest/browser | 4.1.8 | GHSA-g8mr-85jm-7xhm |
| npm | @vitest/browser | 3.2.5 | GHSA-g8mr-85jm-7xhm |
| npm | vite-plus | 0.1.24 | GHSA-g8mr-85jm-7xhm |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| vitest-dev | vitest | >= 3.0.0, < 3.2.5>= 4.0.0, < 4.1.8>= 5.0.0-beta.0, < 5.0.0-beta.4 |
Weakness: CWE-749, CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/vitest-dev/vitest/security/advisories/GHSA-g8mr-85jm-7xhm x_refsource_CONFIRM
- https://github.com/vitest-dev/vitest/pull/10444 x_refsource_MISC
- https://github.com/vitest-dev/vitest/pull/10450 x_refsource_MISC
- https://github.com/vitest-dev/vitest/pull/10456 x_refsource_MISC
- https://github.com/vitest-dev/vitest/commit/385a1aefd4c2bfa5e7d58bf7c6834c929969f2c7 x_refsource_MISC
- https://github.com/vitest-dev/vitest/commit/63e3b2eee4d58da56786a6333f517b9b492528c7 x_refsource_MISC
- https://github.com/vitest-dev/vitest/commit/e4067b3b150005fd42cf75f994300119245806b9 x_refsource_MISC
- https://github.com/vitest-dev/vitest/releases/tag/v3.2.5 x_refsource_MISC
- https://github.com/vitest-dev/vitest/releases/tag/v4.1.8 x_refsource_MISC
- https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.4 x_refsource_MISC